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  Photoinduced Melting of Antiferromagnetic Order in La0.5Sr1.5MnO4 Measured Using Ultrafast Resonant Soft X-Ray Diffraction

Ehrke, H., Tobey, R., Wall, S., Cavill, S., Först, M., Khanna, V., et al. (2011). Photoinduced Melting of Antiferromagnetic Order in La0.5Sr1.5MnO4 Measured Using Ultrafast Resonant Soft X-Ray Diffraction. Physical Review Letters, 106(21): 217401. doi:10.1103/PhysRevLett.106.217401.

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PhysRevLett.106.217401.pdf (Verlagsversion), 555KB
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PhysRevLett.106.217401.pdf
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2011
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© American Physical Society
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externe Referenz:
http://dx.doi.org/10.1103/PhysRevLett.106.217401 (Verlagsversion)
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http://arxiv.org/abs/1012.4960 (Preprint)
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 Urheber:
Ehrke, H.1, 2, Autor
Tobey, Ra'anan1, 3, 4, Autor           
Wall, Simon1, 5, Autor           
Cavill, S.A.2, Autor
Först, Michael3, 4, Autor           
Khanna, Vikaran3, 4, Autor           
Garl, Thomas3, 4, Autor           
Stojanovic, N.6, Autor
Prabhakaran, D.1, Autor
Boothroyd, A. T.1, Autor
Gensch, M.7, Autor
Mirone, A.8, Autor
Reutler, P.9, Autor
Revcolevschi, A.9, Autor
Dhesi, S. S.2, Autor
Cavalleri, Andrea1, 3, 4, Autor           
Affiliations:
1Department of Physics, Clarendon Laboratory, University of Oxford, Oxford, United Kingdom, ou_persistent22              
2Diamond Light Source, Chilton, Didcot, OX11 0QX, United Kingdom, ou_persistent22              
3Condensed Matter Dynamics Division, Max Planck Research Department for Structural Dynamics, Department of Physics, University of Hamburg, External Organizations, ou_2173637              
4CFEL, Hamburg, Germany, ou_persistent22              
5Physical Chemistry, Fritz Haber Institute, Max Planck Society, ou_634546              
6HASYLAB at DESY, Notkestrasse 85, 22607 Hamburg, Germany, ou_persistent22              
7Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstraße 400, 01328 Dresden, Germany, ou_persistent22              
8European Synchrotron Radiation Facility, B.P. 220, F-38043 Grenoble, France, ou_persistent22              
9Laboratoire de Physico-Chimie de l’Etat Solide, Centre Université Paris Sud, F-91405 Orsay Cedex, France, ou_persistent22              

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Schlagwörter: PACS numbers: 78.70.Ck, 71.27.+a, 75.25.-j, 78.47.J-
 Zusammenfassung: We used ultrafast resonant soft x-ray diffraction to probe the picosecond dynamics of spin and orbital order in La0.5Sr1.5MnO4 after photoexcitation with a femtosecond pulse of 1.5 eV radiation. Complete melting of antiferromagnetic spin order is evidenced by the disappearance of a (1/4,1/4,1/2) diffraction peak. On the other hand, the (1/4,1/4,0) diffraction peak, reflecting orbital order, is only partially reduced. We interpret the results as evidence of destabilization in the short-range exchange pattern with no significant relaxation of the long-range Jahn-Teller distortions. Cluster calculations are used to analyze different possible magnetically ordered states in the long-lived metastable phase. Nonthermal coupling between light and magnetism emerges as a primary aspect of photoinduced phase transitions in manganites.

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Sprache(n): eng - English
 Datum: 2011-01-112011-05-252011-05-27
 Publikationsstatus: Erschienen
 Seiten: 4
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: Expertenbegutachtung
 Identifikatoren: DOI: 10.1103/PhysRevLett.106.217401
arXiv: 1012.4960
 Art des Abschluß: -

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Titel: Physical Review Letters
  Andere : Phys. Rev. Lett.
Genre der Quelle: Zeitschrift
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Affiliations:
Ort, Verlag, Ausgabe: Woodbury, N.Y., etc. : American Physical Society.
Seiten: - Band / Heft: 106 (21) Artikelnummer: 217401 Start- / Endseite: - Identifikator: ISSN: 0031-9007
CoNE: https://pure.mpg.de/cone/journals/resource/954925433406